.carousel-item {
	height: 600px;
}

body {
	font-family: "微软雅黑";
	background-image: url(../images/banner4.jpg);
}
footer{
	padding-top: 50px;
	padding-bottom: 50px;
	font-size: 14px;
	background: #f5f5f5;
}
.niupi {
	width: 100%;
	height: 20px;
	background: white;
}
.card .card-text{
	height: 30px;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}
.bd-example{
	margin-bottom: 20px;
}
@media(max-width:600px) {
	.carousel-item {
		position: relative;
		height: auto;
	}
	ol {
		position: absolute;
	}
}